4日纯碱下跌1.18%，最新持仓变化

Core Insights - The main contract for soda ash (contract 2509) closed at a decrease of 1.18% on July 4, with a trading volume of 2,130,700 contracts and a net short position among the top 20 positions of 273,611 contracts [1][3] Trading Volume and Positions - Total trading volume for all soda ash contracts was 2,623,300 contracts, a decrease of 114,300 contracts from the previous day [1] - Among the top 20 positions, long positions totaled 1,300,600 contracts, an increase of 52,000 contracts, while short positions totaled 1,707,500 contracts, an increase of 89,500 contracts [1] Major Players - The top three long positions were held by Guotai Junan (total position 112,389), CITIC Futures (total position 85,047), and Founder Futures (total position 79,677) [1] - The top three short positions were held by Guotai Junan (total position 270,703), CITIC Futures (total position 152,984), and Dongzheng Futures (total position 151,601) [1] Changes in Long Positions - The top three increases in long positions were from Jianxin Futures (holding 39,920, increase of 6,116), Ping An Futures (holding 31,054, increase of 3,114), and Shenyin Wanguo (holding 38,940, increase of 3,113) [1] - The top three decreases in long positions were from CITIC Futures (holding 56,148, decrease of 3,560), Dongzheng Futures (holding 37,597, decrease of 2,823), and Yong'an Futures (holding 36,201, decrease of 2,293) [1] Changes in Short Positions - The top three increases in short positions were from Dongzheng Futures (holding 118,177, increase of 29,069), Guotai Junan (holding 206,175, increase of 13,757), and CITIC Futures (holding 102,624, increase of 10,740) [1] - The top three decreases in short positions were from Shenyin Wanguo (holding 20,957, decrease of 10,944), Yong'an Futures (holding 82,421, decrease of 9,633), and Guangfa Futures (holding 19,874, decrease of 4,139) [1]